Paul McCartney and Ringo Starr perform at The Night that Changed America: A Grammy Salute to the Beatles, on Monday, Jan. 27, 2014, in Los Angeles. (Photo by Zach Cordner/Invision/AP) ORG XMIT: CAZC103

Paul McCartney and Ringo Starr perform at The Night that Changed America: A Grammy Salute to the Beatles, on Monday, Jan. 27, 2014, in Los Angeles. (Photo by Zach Cordner/Invision/AP) ORG XMIT: CAZC103

Photo: Zach Cordner, AP

Paul McCartney and Ringo Starr perform at The Night that Changed... Photo-5786845.78599 - Times Union

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Annie Lennox and Dave Stewart of the Eurythmics perform at The Night that Changed America: A Grammy Salute to the Beatles, on Monday, Jan. 27, 2014, in Los Angeles. (Photo by Zach Cordner/Invision/AP) ORG XMIT: CAZC142 less

Annie Lennox and Dave Stewart of the Eurythmics perform at The Night that Changed America: A Grammy Salute to the Beatles, on Monday, Jan. 27, 2014, in Los Angeles. (Photo by Zach Cordner/Invision/AP) ORG XMIT: ... more

Photo: Zach Cordner, AP

Annie Lennox and Dave Stewart of the Eurythmics perform at The... Photo-5786877.78599 - Times Union

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John Mayer, left, and Keith Urban perform at the night that changed America: a Grammy salute to the Beatles, on Monday, Jan. 27, 2014, in Los Angeles. (Photo by Zach Cordner/Invision/AP) ORG XMIT: CABR109

John Mayer, left, and Keith Urban perform at the night that changed America: a Grammy salute to the Beatles, on Monday, Jan. 27, 2014, in Los Angeles. (Photo by Zach Cordner/Invision/AP) ORG XMIT: CABR109

Photo: Zach Cordner, AP

John Mayer, left, and Keith Urban perform at the night that changed... Photo-5786827.78599 - Times Union

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Katy Perry performs at the night that changed America: a Grammy salute to the Beatles, on Monday, Jan. 27, 2014, in Los Angeles. (Photo by Zach Cordner/Invision/AP) ORG XMIT: CABR103

Katy Perry performs at the night that changed America: a Grammy salute to the Beatles, on Monday, Jan. 27, 2014, in Los Angeles. (Photo by Zach Cordner/Invision/AP) ORG XMIT: CABR103

Photo: Zach Cordner, AP

Katy Perry performs at the night that changed America: a Grammy... Photo-5786829.78599 - Times Union

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Taboola Gallery Frame Item-85307.78599 - Times Union

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Alicia Keys performs at the night that changed America: a Grammy salute to the Beatles, on Monday, Jan. 27, 2014, in Los Angeles. (Photo by Zach Cordner/Invision/AP) ORG XMIT: CABR101

Alicia Keys performs at the night that changed America: a Grammy salute to the Beatles, on Monday, Jan. 27, 2014, in Los Angeles. (Photo by Zach Cordner/Invision/AP) ORG XMIT: CABR101

Photo: Zach Cordner, AP

Alicia Keys performs at the night that changed America: a Grammy... Photo-5786830.78599 - Times Union

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Annie Lennox, left, and Dave Stewart arrive at the night that changed America: a Grammy salute to the Beatles, on Monday, Jan. 27, 2014, in Los Angeles. (Photo by Richard Shotwell/Invision/AP) ORG XMIT: CARPS101 less

Annie Lennox, left, and Dave Stewart arrive at the night that changed America: a Grammy salute to the Beatles, on Monday, Jan. 27, 2014, in Los Angeles. (Photo by Richard Shotwell/Invision/AP) ORG XMIT: ... more